(Note: The story is not what it seems, it's actually quite cute, although it's really suspicious).

A man finds an abandoned half-succubus girl by chance. Next to her, a letter reveals the truth: the fruit of a forbidden union between a human and a succubus, the child would never be accepted in the succubus world, where such a crime could even lead to execution. To protect her, her mother decided to leave her in the human world, hoping that someone kind would take care of her.

Moved by compassion, the man takes her in as his adopted daughter. From then on, the story follows the quiet - and sometimes curious - daily life of this unusual family. As he learns little by little about the nature of a succubus child, he discovers that, despite her demonic heritage, she is still just an innocent, sweet and incredibly cute little girl.